Block-printing machine.



E. B. SCHAEFER, BLOCK PRINTING MACHINE.

APPLICATION FILED NOVV 7, I9I6- 1,224,964.

Patented May 8, 1917 3 SHEETSSHEET I.

72" 71116711071 ZZirrCefi. Yo/wee Q1; 6.2% M

m: NORRIS Fsrzus ca. FNOIU-LIYNOH WASNIHUIDN. u c.

E. B. SCHAEFER. BLOCK PRINTING MACHINE. APPLICATION FILED NOV 7, 1916- Patented May 8, 1917.

3 SHEETS-SHEET 2- flizorreey.

-E. B. SCHAEFEH.

BLOCK PRINTING MACHINE.

APPLICATION FILED NOV. 7, Ibis. 1,Q24,964. Patented May 8, 1917.

3 SHEETS-SHEET 3.

Big?

m: mwms PETERS co PHDm-LITHO WASNINUION, a c.

- I PAT FI@.

EARLE IB. SCHAEFER, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO GEO. W. BLABON COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

BLOCK-PRINTING MACHINE.

Specification of Letters Patent.

Patented May 9, 1917.

Application filed November 7, 1916. Serial No. 129,948.

To all whom it may concern.-

Be it known that I, EARLE B. SGHAEFER, a citizen of the United States, residing in the city of Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented certain Improvements in Block- Printing Machines, of which the following is a specification.

My improvements relate particularly to block printing such fabrics as oil cloth and linoleum in the manufacture of rugs, for the purpose of producing ornamentation with a surrounding border, as a rectangular configuration comprising pairs of similar surrounding sides or sides and ends arranged in reverse relation.

In the practice of my invention, I employ a printing machine comprising a plurality of reciprocating printing blocks provided respectively with sections of the pattern to be printed on a fabric movable step by step across the paths thereof, in combination with peculiar means for putting predetermined blocks out of action during the operations of other blocks, the blocks being operable simultaneously to withdraw them from the movable fabric and predetermined blocks being held out of operation during predetermined periods in the sequence of the operations.

The characteristic features of my invention will fully appear from the following description and the accompanying drawings in illustration thereof.

In the drawings, Figure 1 is a plan view of a section of a machine to which my improvements are applied; Fig. 2 is a broken side elevation of the same; Fig. 3 is a broken elevation of the side of the machine opposite that shown in Fig. 2; Fig. 4c is an enlarged view of details shown in Figs. 2 and 8; and Figs. 5, 6, and 7 views of cams employed in the machine.

As illustrated in the drawings, my improvements are applied to a machine of usual construction, comprising the frame 1 provided with wheels 2 which operate belts 3 for carrying a fabric over the bed or table 5 and under the inking mechanism 6 and the printing blocks 7, 7 7 and 7, the blocks being carried by the bars 8 which are movable vertically by cams 9 fixed on the journaled shafts 10 and revolved simultaneously by the engagement of their gears are 11 with shaft 18.

In applying my invention to this machine, in the preferred construction, a shaft 14: is journaled in the frame 1 parallel to the shafts 10, and is provided with the beveled gears 15 and the sprocket wheel 16. A sprocket wheel 17 is fixed on a shaft 10 in the plane of the wheel 16, and a sprocket chain 18 connects the wheels 16 and 17 so that the shaft 1A is driven simultaneously with the shafts 10. The beveled gears 15 engage beveled gears 19 and 19 fixed on the longitudinal shafts 20 and 20 which are journaled on the sides of the frame 1, the connections being such in the construction selected for illustration that the shafts 10 make six revolutions while the shaft 20 makes one, and the shaft 20 makes three revolutions while the shaft 20 makes two and fifty-seven hundredths revolutions.

The longitudinal shaft 20 has fixed thereon the cams 21, 21 and 21, and the shaft 20 has fixed thereon the cam 21*. Each cam 21, 21 21 and 21 acts upon a bell crank lever 22 fulcrumed on the frame 1 and connected by a link 23 with a lever 24:.

The levers 24: are arranged in pairs, fixed on rods 25 journaled in the frame, and provided with the respective latches 26 adapted for engaging catches or lugs 27 on the bars 8. Springs 28 connect the crank levers 22 with the frame 1, acting to keep these levers in contact with the cams which operate them and to withdraw the latches or dogs 26 from the paths of the reciprocating catches. Wipers 21 on the cams force the withdrawal of the dogs, supplementing the action of the springs.

As the cams 9, 21, 21, 21 and 21 are revolved constantly in synchronous relation by the mechanism described, it will be evident that the respective cams 21, 21 21 and 21' may be so constructed and fixed on their shafts with relation to cams 9 (similarly formed and arranged so as to simultaneously operate the bars 8) that one or more of the blocks 7 7 7", and 7 may be held elevated during several reciprocations of the other blocks.

In illustration of an operation where it is desired that block 7 make four impressions gears 12 on a journaled driving due to four revolutions of the corresponding cams 9, to be held in elevated position dur- 6 and fixed on its shaft 20 so that it will hold the corresponding latches 26 in engagement with the corresponding catches 27 during the time the latches 26 corresponding to the cam 21 are held back out of the paths of the corresponding catches 27, the cam 21 acting to hold the corresponding latches 26 back so as to permit the block 7 to operate once after the block 7 has been engaged in the elevated position and the shafts 10 have made the first five revolutions of the sequence; when it is desired that the block 7 be operated but once in the sequence, simultaneously with the last operation of the block 7 in the same sequence, the cam 21* may be formed as illustrated in Fig. 7 and set on its shaft 20 so that it will hold the corresponding latches 26 under their catches 27 excepting duringthe last downward stroke of the block 21, at the beginning of which the corresponding spring 28 and cam 21 effect the withdramtl of such latches 26, which permits the block 7 to be carried down.

In the operation of the described mechanism, the block 7 is provided with a configuration which is impressed in succession on four successive sections of the fabric, advanced step by step for this purpose, and, as the block 7 makes the last impression of its sequence, the block 7 b is caused to make an impression on the fabric which forms an end border of the pattern. lhen, after the fabric has been advanced the necessary two steps to clear the previous printing and while the blocks 7 and 7 are held out of action, in the elevated position, the block 7 descends to impress on the fabric the; border for the other end of the pattern.

It will be understood that the block 7 c is one of a second set of blocks for impressing a second color and part of the design which the rug is to bear.

Having described my invention, I claim:

1. In a printing machine, the combination of a plurality of printing blocks, with means for reciprocating said blocks, and means comprising a revoluble shaft extending longitudinally of the machine and having cams thereon and latching mechanism operated by said cams for periodically holding said blocks out of action in predetermined rela tion.

2. In a printing machine, the combination of a plurality of printing blocks, with meansfor reciprocating said blocks, and means comprlslng a revoluble shaft extending longitudinally of the machine and having cams thereon, latches for holding said blocks out of action, and mechanism whereby said cams operate said latches.

3. In a printing machine, the combination of a plurality of printing blocks, with means for reciprocating said blocks, latching mechanism for holding said blocks out of action, and means comprising springs and a revoluble shaft extending transversely to said blocks and having cams thereon for operating said latches and controlling the opera tions of said blocks in predetermined relation.

41-. In a printing machine, the combination of a plurality of reciprocatory printing mechanisms arranged in parallel relation and a plurality of revoluble cams for elevating said mechanisms simultaneously, with mechanisms for engaging and holding said mechanisms first named in their elevated positions, and mechanisms comprising a revoluble shaft disposed transversely to said printing mechanisms and a plurality of cams on said shaft connected to operate in predetermined relation with said cams first named, whereby said mechanisms second named are operated and said mechanisms first named are controlled in predetermined relation.

5. In a printing machine, the combination with a plurality of reciprocatory printing mechanisms and a plurality of revoluble shafts having cams thereon for operating said mechanisms, of a revoluble shaft having a gear thereon, means for revolving said shafts together, a second revoluble shaft having a gear thereon engaged by said gear first named, cams fixed on said shaft last named in predetermined relation to said cams first named and to each other, and latching mechanism controlled by said cams second named for controlling said printing mechanism so as to operate in predetermined sequential relation.

6. In a printing machine, the combination with a plurality of reciprocato-ry printing mechanisms, of mechanisms for holding the respective mechanisms first named out of action, longitudinal shafts having cams thereon, means for revolving said shafts at different speeds, and means whereby said cams operate said mechanisms first named.

7. In a printing machine, the combination with a plurality of reciprocatory printing mechanisms, of latching mechanisms for holding said printing mechanisms out of action, a plurality of journaled shafts extending longitudinally of the machine, means for revolving said shafts at difierent speeds, cams fixed on said shafts respectively, and means whereby said cams operate said latching mechanisms in predetermined relation.

8. In a printing machine, the combination means comprising a plurality of cams for simultaneously elevating said mechanisms, of latching means for holding said mechanisms out of action, a plurality of shafts having cams thereon for operating said latching means, a journaled shaft, means whereby said shaft last named revolves said shafts at different speeds, and means whereby said shaft and said cams first named are revolved together.

In testimony whereof I have hereunto set my name this 31st day of October, 1916.

EARLE B. SOHAEFER.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. O. 

